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Abstract Objective To assess the risk factors for acute and subacute stent thrombosis (ST) formation after drug-eluting stent implantation. Methods 32 cases with acute and subacute ST and 50 cases without ST out of 2550 patients received DES implantation for coronary artery disease were included and major adverse events occurred during fol ow-up 9-12 months were analyzed retrospectively. Multiple logistic regression analysis was used to assess risk factors of ST. Results The incidence of major adverse events was higher in patients with than without ST during the follow-up period(P<0.01). Inappropriate stenting, aspirin or clopidogrel resistance, hypercoagulation, hypotension and hypovolemia were associated with ST formation (al P<0.05). Conclusion Inappropriate stenting, aspirin or clopidogrel resistance, hypercoagulation, hypotension and hypovolemia are risk factors of ST formation.
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